Phase behaviors of sphere-forming triblock copolymers confined in nanopores: A dynamic density functional theory study

被引：14
|
作者：
Hao, Qing-Hai [1 ]
Miao, Bing [2 ]
Song, Qing-Gong [1 ]
Niu, Xiao-Hui [1 ]
Liu, Tie-Ju [1 ]
机构：
[1] Civil Aviat Univ China, Coll Sci, Tianjin 300300, Peoples R China
[2] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
来源：
POLYMER | 2014年 / 55卷 / 16期
基金：
中国国家自然科学基金;
关键词：
Phase behavior; Confinement effects; Dynamic density functional theory; ASYMMETRIC DIBLOCK COPOLYMERS; DIRECTED MESOPHASE FORMATION; BLOCK-COPOLYMER; THIN-FILMS; CYLINDRICAL CONFINEMENT; MICROPHASE SEPARATION; MESOSCOPIC DYNAMICS; MELTS; MORPHOLOGY; TRANSITIONS;
D O I：
10.1016/j.polymer.2014.06.062
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
We have studied the phase behaviors of sphere-forming triblock copolymers in confined spaces using the mean-field dynamic density functional theory. The focus is on the morphologies induced by cylindrical nanopores. The effects of the pore diameter and the surface field strength on the phase behaviors are investigated systematically. Typical structures different from the bulk morphologies are observed, which are consistent with available experiments. A series of novel morphologies are predicted in our simulation. Furthermore, the shape effect of the pore cross section on the helical structures is studied. The results of our simulation should provide a guide for designing polymeric nanomaterials confined in cylindrical nanochannels. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4281 / 4288
页数：8
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